Mass Spectrometry of Pyrazolo[3,4-b]pyrido[2',3'-b]-1,6-naphthyridines and Dipyrazolo[3,4-b];3',4'-h]-1,6-naphthyridines
作者:Samia Khakwani、Samina Aslam、Sara Mussadiq、Mehrzadi Noureen Shahi、Najma Perveen、Alice M. Rolim Bernardino、Misbahul Ain Khan
DOI:10.14233/ajchem.2016.19947
日期:——
The mass spectra of several pyrazolo[3,4-b]pyrido[2,3-b]-1,6-naphthyridines and dipyrazolo[3,4-b];3,4-h]-1,6-naphthyridines are presented. The fragmentation is initiated by the elimination of CO molecule [m/z 28] followed by other fragments, such as halogen (Cl, Br) or halogen acid (HCl, HBr) and some proton loss is also observed in some cases. Successive loss of HCN (m/z 27) molecules also completes the scheme with the stable C6H5 fragment.
本文展示了几种吡唑并[3,4-b]吡啶并[2,3-b]-1,6-萘啶和二吡唑并[3,4-b];3,4-h]-1,6-萘啶的质谱。首先出现的是 CO 分子[m/z 28]的消除,然后出现其他碎片,如卤素(Cl、Br)或卤酸(HCl、HBr),在某些情况下还观察到一些质子的损失。HCN 分子(m/z 27)的连续损失也完成了该方案中稳定的 C6H5 片段。